body {
    padding: 15px;
    background-color: #f2f2f2;
}

/* 添加类别 按钮 */
.layui-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 弹出框 */
.layui-form {
    padding: 15px 30px 0 0;
}